urethral transitional cell carcinomanon small cell carcinomaneuroendocrine small cell carcinomametastatic small cell carcinomanon small cell carcinoma prognosiskidney cell carcinomanon small cell carcinoma stage 4liver cell carcinomasmall cell carcinoma lungesophageal squamous cell carcinomametastatic urothelial cell carcinomasquamous cell carcinoma chemotherapy